Pump



March 13, 1928.

1,662,720 M SANCHEZ PUMP 1.1ed Ann]. 13 1927 2 Sheets-Sheet 1 luuunL 0 nj a w M.

ATTO R N EY March 13, 1928.

' 1,662,720 M. SANCHEZ v PUMP Filed April 1 1927 2 Sheets-Sheet 2 VENTOR I ATTOR N EY Patented Mar. 13, 1928.

UNITED STATES MAXIMILIANO SANCHEZ, NEW YORK, N. Y.

PUMP.

7 Application filed April 13,

My present invention has reference to a portable pump designed for drawing. a fluid from one tank or the like and delivering the fluid into another tank and an object is the provision of a pump for this purpose wherein the fluid will be constant when the device is in operation. I g

7 Anotherobject is the provision of a pump having a plurality of cylinders and operated means wherebythe piston in each cylinder is simultaneously drawing fluid intoone end of the cylinder and is discharging the fluid from the other end thereof, and whereby a constant flow of fluid is insured as long as the pump is in operation. 7 I

A further object is the provision of a pump of this character in which the cylinders are mounted in a novel manner upon the base and embraced by the sides of the body of the improvement and whereby the cylinders and the operating parts for the pump may be conveniently installed, readily inspected and easily removed for repairs or replacement.

To the attainment of the foregoing objects and others which will present themselves as the nature of the invention is better understood, the improvement also resides in certain other novel features of construction, combination and operative association of parts, one satisfactory embodiment of which is disclosed by the accompanaying drawings.

In the drawings:

Figure 1 .isa top plan view of a portable pump in accordance with this invention.

Figure 2 is a side elevation thereof.

Figure 3 is a horizontal sectional view on the line 8-3 of Figure 2.

Figure 4 is a vertical sectional view on the line 4-4 of Figure 1.

Referring now to the drawings in detail, the numeral 1 designates the base of the improvement. This base is integrally formed with upstanding spaced side members 2. The inner face of each of the side members 2 is concaved, as at 3, and the side members are connected by a top plate 4. The top plate is integrally formed with the sides and the said top is also formed with a hand grip in the nature of a bail 5.. The top4 has a central depending flange or web 6.

Arranged on the'base 1, embracing the concaved walls 3 of the sides 2 and in con-- tact engagementwith each other there is a pair of cylinders In each cylinder there 1927. Serial No. 183,578.

One of 3 respectively in one of the sides and in the web 6 of the top 4, while the second straight end of the shaft is arranged in the opposite side and has a threaded extension 13. The last mentioned side, in a line with the threaded end 13 of the shaft 12 has an opening therethrough for the reception of the straight end of a crank handle 14. The mentioned end of the handle has a threaded bore in which is screwed the threaded end of the crank shaft. The removal of the handle prevents the operation of the pump by unauthorized persons. The pump is designed to be of a light structure so that the same can be conveniently conveyed to desired locations.

Along the sides of the cylinders 7 there are arranged connected pipes that provide what I will term a bypass. The by-passes 15 and 16 have their ends connected respectively with t-hesides adjacent to the bottom and with the top of the respective cylinders 7. The pipes constituting the bypasses, at

, or adjacent their connection with the cylinders have arranged therein check valves of the ordinary construction. The casings for these check valves are-indicated by the numerals 17. The check valves are preferably of the ball type and are actuated by the suc tion created by the pistons inthe cylinders. The pipes constituting the bypasses 15 and 16 have connected to their central members respectively an inlet pipe 18 and an outlet pipe 19.

The check valves are, of course, so arranged that when the handle is turned to operate the crank shaft and reciprocate the pistons 8 in the respective cylinders, the passage through the lower pipes of each of the bypasses will be opened when the upper passage is closed. In this manner it will be seen that fluid drawn, say, through the pipe 18 will be delivered respectively into the top and bottom of the respective cylinders 7 upon one stroke of the pistons, such fluid being forced out of the pipes constituting the second bypass on the second stroke of the pistons. Thus it will be noted that fluid is drawn in from both the top and bottom of the cylinders 2 at reverse strokesfthereof and the fluid drawn in as ens stroke is ejected by: the second stroke. The result is that a constant fluid 18 wanted as long as the pump is in operatlon.

The crank shaft is concealed by-hollow cap;

plates 20 which are bolted to the upper ends of the sides and to the top a as clearly dist;

base having spaced upstanding sides and a top plate connecting thesides, a pair oi. cylinders arranged on the base, contacting with the, sides and with each other, a piston, in each cylinder, a bypass in the respective sides oi the cylinders and establishing con1- ninnications between the top and adjacent to the bottom of 'therespectiire cylinders, check valves in the bypass adjacent the connections thereof with the cylinders, a fluid inlet pipe connected with one of the bypasses, a, fluid outlet pipe connectedflwith the second bypass and niea-ns for reciprocating the pistons.

2; In a pump, a base havingjintegral sides arising therefrom Whoseinner faces are concaved, a top connecting the sides and providedwithan outstanding handle and a depending Web, a pair 01" cylinder-s resting on i the base, contacting with the concaved inner taces oi the sides and contacting with each other, a pistonin each of the cylinders, connected pipes establishing bypasses arranged along'the sides ofthe cylinders and communicating with the cylinders adjacent to the bottom and at the top portions thereof, a

check-valve in the bypasses adjacent their received through one of the sides and is screwed on the said threaded end of the crankshaft, links carried by the crank shaft and pivotally connected to the piston rods andone ofsaid bypasses having a fluid inlet pipe and the other a fluid-outlet pipe. 7

In testimonygwhereof Iaifix my signature.

MAXIMILIANO SANCHEZ; 

